EP2893839B1 - Verschiebungsvorrichtung für eine Rückenlehne - Google Patents

Verschiebungsvorrichtung für eine Rückenlehne Download PDF

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Publication number
EP2893839B1
EP2893839B1 EP14000657.8A EP14000657A EP2893839B1 EP 2893839 B1 EP2893839 B1 EP 2893839B1 EP 14000657 A EP14000657 A EP 14000657A EP 2893839 B1 EP2893839 B1 EP 2893839B1
Authority
EP
European Patent Office
Prior art keywords
backrest
slot
translation mechanism
positioning pin
locating member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP14000657.8A
Other languages
English (en)
French (fr)
Other versions
EP2893839A1 (de
Inventor
Wei Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Weihong Hardware and Plastic Products Co Ltd
Original Assignee
Dongguan Weihong Hardware and Plastic Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Weihong Hardware and Plastic Products Co Ltd filed Critical Dongguan Weihong Hardware and Plastic Products Co Ltd
Publication of EP2893839A1 publication Critical patent/EP2893839A1/de
Application granted granted Critical
Publication of EP2893839B1 publication Critical patent/EP2893839B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C17/00—Sofas; Couches; Beds
    • A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism

Definitions

  • the present invention relates to a component of a sofa, more particularly to a backrest translation mechanism that is able to adjust the translation movement of a backrest of the sofa.
  • an adjuster for adjusting positions of the backrest is a linkage which has one end fixed on the backrest and the other end fixed on the sofa seat, so as to twist a parallelogram to move the backrest forwards or backwards.
  • the linkage has some drawbacks as follows. First, due to the restriction of a parallelogram structure, the movement route during the adjusting of the backrest is an arc, but not a straight line (that is the movement is not a pure translation movement), which causes the adjusting to be inconvenient. Besides, the linkage must sustain the whole weight of the backrest, which may damage the backrest. Second, only two using positions (one forward and one backward) are provided to be adjusted, which also could not meet the demand of various using positions.
  • One objective of the present invention is to provide a backrest translation mechanism with multiple using positions for adjusting the translation movement of the backrest.
  • a backrest translation mechanism used for adjusting positions of a backrest relative to a sofa seat, includes a holder, a swing locating member, a backrest mount, a slider, and a positioning pin.
  • the holder is mounted on the sofa seat
  • the swing locating member is shaped as a strip whose one end is defined as a first end pivoted on the holder, and the swing locating member has several locking slots with downward openings arranged at regular intervals along a length direction of the swing locating member for engaging with and unidirectionally locking up the positioning pin by gravity, and one side of each locking slot that is far from the first end is provided with an inclined surface which is inclined from the top to bottom and towards an opposite direction of the first end.
  • the backrest mount has an upper end mounted on the backrest and a lower end slidably set on the holder along the length direction.
  • the slider is slidably set on the swing locating member along the length direction, and the slider has a retaining slot and a limiting slot both of which extends along the length direction and penetrates through the slider.
  • the positioning pin is accepted by the retaining slot and the locking slot jointly, the limiting slot is located on one side of the retaining slot that closes to the first end and communicated with the retaining slot, and the positioning pin is restricted to be out of the locking slot by the retaining slot.
  • the positioning pin is fixed on the lower end of the backrest mount and slidably inserted into the retaining slot and the limiting slot.
  • the backrest is mounted on the upper end of the backrest mount, and the holder fixed on the sofa seat is mounted on the lower end of the backrest mount, thus the backrest is capable of translating or move horizontally along the length direction when the backrest is adjusted, which the operation is very simple. Furthermore, the weight of the backrest is sustained by the sofa seat during the translation movement, but not by the backrest translation mechanism, which prevents the backrest translation mechanism 1 being damaged. Meanwhile, due to multiple locking slots are set on the swing locating member, thus the backrest mount could be locked in different positions by engagement between the positioning pin and the locking slots, that is the backrest has multiple using positions which meets different demands of consumers.
  • the retaining slot and the limiting slot have a common lower wall, an upper wall of the limiting slot is lower than a position of the opening of the locking slot, and an upper wall of the retaining slot is higher than that of the limiting slot. Due to the upper wall of the limiting slot is lower than the position of the opening of the locking slot, thus the slider could not slide when the positioning pin 1 is restricted in the limiting slot, so that the swing locating member can not engage with the positioning pin by gravity, which causes the backrest mount can make reciprocating adjustments freely.
  • a long groove is formed through the swing locating member along the length direction and adapted for slidably receiving the positioning pin.
  • the locking slots are formed on an upper wall of the long groove.
  • each locking slot has a cambered surface at one side that closes to the first end, and the cambered surface is abutting on the inclined surface and has a shape corresponding with an external profile of the positioning pin.
  • the positioning pin can be locked in the locking slot in a single direction more stably due to the existence of the cambered surface, so that a reciprocating movement of the backrest mount can be restricted, to keep a stable using status.
  • a spring leaf is set between the swing locating member and the slider, which is outwards urging on the slider. Due to this spring leaf, the slider will slide on the swing locating member only if the positioning pin is driven, which ensures the stability of the positional relationships among the retaining slot, the limiting slot and the positioning pin so as to keep the normal locking and normal sliding of the backrest mount.
  • the holder comprises at least one guide roller, and at least one sleeve is formed at the lower end of the backrest mount for allowing the guide roller to pass through.
  • the cooperation between the guide roller and the sleeve can achieve the slide of the backrest mount on the holder.
  • two limiting plates standing vertically are provided at two sides of the holder, and the guide roller is set between the limiting plates.
  • the sliding of the sliding mount 121 is prevented to going beyond the guide rollers.
  • two guide rollers are provided at two sides of the holder respectively, and the guide rollers are symmetrical with the swing locating member.
  • the lower end of the backrest mount is a provided with a sliding mount
  • two sides of the sliding mount are provided with two sleeves
  • a middle of the sliding mount is provided with an opening for allowing the swing locating member and the slider to pass through.
  • two pin fasteners extending downwards are fixed on a bottom of the sliding mount, which are located at two sides of the slider and form a passageway for allowing the positioning pin to pass through and then connect firmly.
  • the backrest translation mechanism 1 of the present embodiment includes a holder 10, a swing locating member 11, a backrest mount 12, a slider 13, and a positioning pin 15.
  • the holder 10 is shaped as a rectangle having a central opening, and the holder 10 has two long edges and two short edges.
  • Two limiting plates 100 standing vertically are formed at two ends of the long edge of the holder 10, and two guide rollers 101 are set between the two limiting plates 100 along the direction of the long edges, so as to enhance the stability of the backrest translation mechanism 1 during adjusting and using.
  • a pivotal base 102 protruded upwards is fixed on one end of the holder 10, which is located at the middle position of the two guide rollers 101.
  • the holder 10 of the present invention could be mounted on sofa seats or other seats.
  • the swing locating member 11 is shaped as a strip whose one end is defined as a first end 110 that is pivotally connected with the pivotal base 102, and a pivotal axis (not labeled) is set horizontally and vertical with a length direction of the swing locating member 11, by which the swing locating member 11 can be pivoted about the pivotal axis so that it can swing up and down relatively to the holder 10.
  • the swing locating member 17 is located between the two guide rollers 101 which are symmetrical relatively to the swing locating member 11.
  • a long groove 111 is formed on and running through the swing locating member 11 and extended along the length direction, which is used for accommodating the positioning pin 15 by sliding.
  • Several locking slots 112 with downward openings are formed on the upper walls of the long groove 111.
  • each locking slot 112 has a cambered surface 113 formed on one side that closes to the first end 110, and an inclined surface 114 formed on another side far from the first end 110. Furthermore, the inclined surface 114 is inclined from up to down along a direction far from the first end (namely towards an opposite direction of the first end), the cambered surface 113 and the inclined surface 114 are abutted each other, and the cambered surface 113 has a shape corresponding with the external profile of the positioning pin 15. The positioning pin 15 is engaged with and unidirectionally locked by the locking slots 112 by gravity of the locking slots 112.
  • the positioning pin 15 can be locked in the locking slot 112 in a single direction more stably due to the existence of the cambered surface 113, so that a reciprocating movement of the backrest mount 12 can be restricted, to keep a stable using status.
  • the configuration of the inclined surface 114 ensures that the positioning pin 15 can slide from the locking slot 112 along the inclined surface 114, which keep a normal positive movement of the backrest mount 12.
  • the slider 13 defines a cavity in the middle where the swing locating member 11 passes through, so that the slider 13 can be slid on the swing locating member 11.
  • a retaining slot 131 and a limiting slot 132 are formed on and run through the slider 13 along the length direction, and the positioning pin 15 is received by the retaining slot 131 and the locking slot 112 jointly.
  • the limiting slot 132 is located on one side of the retaining slot 131 near the first end and communicated with the retaining slot 131, and the positioning pin 15 is restricted to be out of the locking slot 112 by the limiting slot 132.
  • the retaining slot 131 and the limiting slot 132 have a common lower wall, an upper wall of the limiting slot 132 is lower than a position of the opening of the locking slot 112, and an upper wall of the retaining slot 131 is higher than that of the limiting slot 132 and has the same height position with the top of the locking slot 112. Due to the upper wall of the retaining slot 131 is lower than the position of the opening of the locking slot 112, thus the slider 13 could not slide when the positioning pin 15 is restricted in the limiting slot 132, so that the swing locating member 11 can not engage with the positioning pin 15 by gravity, which causes the backrest mount 12 can make reciprocating adjustments freely.
  • a spring leaf 14 is set between the slider 13 and the swing locating member 11. Due to this spring leaf 14, the slider 13 will slide on the swing locating member lI only if the positioning pin 15 is driven, which ensures the stability of the positional relationships among the retaining slot 131, the limiting slot 132 and the positioning pin 15 so as to keep the normal locking and normal sliding of the backrest mount 12,
  • the spring leaf 14 can be omitted, and the tight relationship also can be achieved by replaced the spring leaf 14 with ribs formed on the swing locating member 11 and the slider 13 respectively, or by one way of interference fit.
  • the upper end of the backrest mount 12 is provided with a backrest mounting plate 120 which is fixed on a backrest of a sofa or other seats.
  • the backrest mount 12 further has a lower end where a sliding mount 121 is connected.
  • Two sleeves 122 are respectively set at two sides of the sliding mount 121, and the guide rollers 101 are passing through the sleeves 122, so that the backrest mount 12 can slide on the holder 10. While the two limiting plates 100 mentioned above are used for preventing the sliding of the sliding mount 121 beyond the guide rollers 101.
  • the sliding mount 121 has a middle opening (not labeled) for allowing the swing locating member 11 and the slider 13 to pass.
  • the sliding mount 121 further includes two pin fasteners 16 fixed on the bottom and extended downwards. Specifically, the pin fasteners 16 are respectively located at two sides of the slider 13, and a passageway is formed between the two pin fastener 16 for allowing the positioning pin 15 to pass and connect firmly.
  • the positioning pin 15 is fixed on the pin fasteners 16 and inserted into the long groove 111, the retaining slot 131 and the limiting slot 132.
  • Fig. 4 shows an initial position of the backrest mount 12 of the backrest translation mechanism 1.
  • the backrest is moved rightwards, namely the backrest mount 12 is moved rightwards, this moment, the positioning pin 15 fixed on the pin fasteners 16 slides rightwards along the swing locating member 11 by following the sliding mount 121, at the same time the slider 13 is driven to slide along the swing locating member 11 as the positioning pin 15 is urging the lower side wall of the retaining slot 131.
  • the positioning pin 15 is interfered on the upper wall of the long groove 111, thus the position of the swing locating member 11 is steady.
  • the positioning pin 15 when the positioning pin 15 is slid beneath the first said locking slot 112, the swing locating member 11 will swing downwards about the pivotal axis of the first end 110 and the pivotal base 102 due to its gravity, as a result, the positioning pin 15 will be locked in the locking slot 112, and the slider 13 on the swing locating member 11 will also swing and slide, finally the positioning pin 15 will be received by the locking slot 112 and the upper portion of the retaining slot 131 jointly. Because of the restriction of the cambered surface 113, the positioning pin 15 is locked by the locking slot 112 in a single direction, but not a reverse direction (namely the left direction).
  • the holder 10 of the backrest translation mechanism 1 according to the present invention is mounted on the sofa seat 2, and the backrest mount 12 is mounted on the backrest 3 of the sofa.
  • the position of the backrest 3 can be adjusted by the backrest translation mechanism 1, so that the sofa has multiple using positions.
  • the backrest 3 is mounted on the upper end of the backrest mount 12, and the holder 10 fixed on the sofa seat 2 is mounted on the lower end of the backrest mount 12, thus the backrest 3 is capable of translating or move horizontally along the length direction when the backrest 3 is adjusted, which the operation is very simple. Furthermore, the weight of the backrest 3 is sustained by the sofa scat 2 during the translation movement, but not by the backrest translation mechanism 1, which prevents the backrest translation mechanism 1 being damaged. Meanwhile, due to multiple locking slots 112 are set on the swing locating member 11, thus the backrest mount 12 could be locked in different positions by engagement between the positioning pin 15 and the locking slots 112, that is the backrest 3 has multiple using positions which meets different demands of consumers.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Nursing (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (10)

  1. Rückenlehnenverschiebemechanismus (1) zur Einstellung von Positionen einer Rückenlehne (3) relativ zu einem Sofasitz (2), umfassend einen Halter (10), ein Schwenkpositionierelement (11), einen Rückenlehnenträger (12), einen Schieber (13) und einen Positionierungsstift (15, 1); wobei der Halter (10) auf dem Sofasitz (2) montierbar ist; wobei das Schwenkpositionierelement (11) wie ein Streifen geformt ist, dessen eines Ende als ein erstes Ende (110) definiert ist, das am Halter (10) schwenkbar ist, wobei das Schwenkpositionierelement (11) mehrere Verriegelungsschlitze (112) mit Abwärtsöffnungen, welche in regelmäßigen Abständen entlang einer Längsrichtung des Schwenkpositionierelements (11) angeordnet sind, für den Eingriff mit dem Positionierungsstift (15, 1) und für die Verriegelung mit diesem in nur einer Richtung durch die Schwerkraft und mit einer Seite der Verriegelungsschlitze (112) aufweist, die weit vom ersten Ende (110) entfernt ist und mit einer geneigten Fläche (114) bereitgestellt ist, die sich von oben nach unten erstreckt und in Richtung einer dem ersten Ende (110) entgegengesetzten Richtung geneigt ist;
    wobei der Rückenlehnenträger (12) ein oberes Ende, welches an der Rückenlehne (3) montierbar ist, und ein unteres Ende aufweist, welches auf dem Halter (10) entlang der Längsrichtung verschiebbar aufgesetzt ist; dadurch gekennzeichnet, dass
    der Schieber (13) gleitend auf dem Schwenkpositionierelement (11) entlang der Längsrichtung aufgesetzt ist und der Schieber einen Rückhalteschlitz (131) und einen Begrenzungsschlitz (132) aufweist, die sich beide entlang der Längsrichtung erstrecken und den Schieber (13) durchdringen; der Positionierungsstift (15, 1) durch den Rückhalteschlitz (131) und den Verriegelungsschlitz (112) gemeinsam aufgenommen wird, wobei der Begrenzungsschlitz (132) auf der einen Seite des Rückhalteschlitzes (131), die an das ersten Ende (110) anschließt, angeordnet ist und mit dem Rückhalteschlitz (131) in Verbindung steht, und wobei der Positionierungsstift (15, 1) darauf eingeschränkt ist, aus dem Verriegelungsschlitz (112) durch den Rückhalteschlitz (131) herausgehalten zu sein;
    wobei der Positionierungsstift (15, 1) am unteren Ende des Rückenlehnenträgers (12) befestigt ist und in den Rückhalteschlitz (131) und den Begrenzungsschlitz (132) verschiebbar eingesetzt ist.
  2. Rückenlehnenverschiebemechanismus nach Anspruch 1, wobei der Rückhalteschlitz und der Begrenzungsschlitz eine gemeinsame untere Wand aufweisen, wobei eine obere Wand des Begrenzungsschlitzes niedriger ist als eine Position der Öffnung des Verriegelungsschlitzes und eine obere Wand des Rückhalteschlitzes höher ist als jene des Begrenzungsschlitzes.
  3. Rückenlehnenverschiebemechanismus nach Anspruch 1, wobei eine lange Nut durch das Schwenkpositionierelement entlang der Längsrichtung ausgebildet ist und zur gleitenden Aufnahme des Positionierungsstiftes angepasst ist und die Verriegelungsschlitze auf einer oberen Wand der langen Nut ausgebildet sind.
  4. Rückenlehnenverschiebemechanismus nach Anspruch 1, wobei jeder Verriegelungsschlitz eine gewölbte Fläche an einer Seite, die mit dem ersten Ende schließt, aufweist und die gewölbte Fläche an der geneigten Fläche anstößt und eine Form aufweist, die einem Außenprofil des Positionierungsstiftes entspricht.
  5. Rückenlehnenverschiebemechanismus nach Anspruch 1, wobei eine Blattfeder zwischen dem Schwenkpositionierelement und dem Schieber eingesetzt ist, die auf dem Schieber nach außen drängt.
  6. Rückenlehnenverschiebemechanismus nach Anspruch 1, wobei der Halter zumindest eine Führungsrolle umfasst und mindestens eine Hülse an dem unteren Ende des Rückenlehnenträgers ausgebildet ist, um der Führungsrolle das Hindurchgehen zu ermöglichen.
  7. Rückenlehnenverschiebemechanismus nach Anspruch 6, wobei zwei Begrenzungsplatten senkrecht stehend an beiden Seiten des Halters vorgesehen sind und die Führungsrolle zwischen den Begrenzungsplatten eingesetzt ist.
  8. Rückenlehnenverschiebemechanismus nach Anspruch 6, wobei zwei Führungsrollen jeweils an beiden Seiten des Halters vorgesehen sind und die Führungsrollen symmetrisch zum Schwenkpositionierelement sind.
  9. Rückenlehnenverschiebemechanismus nach Anspruch 8, wobei das untere Ende des Rückenlehnenträgers mit einer Schiebehalterung vorgesehen ist, wobei zwei Seiten der Schiebehalterung mit zwei Hülsen vorgesehen sind und eine Mitte der Schiebehalterung mit einer Öffnung vorgesehen ist, um dem Schwenkpositionierelement und dem Schieber das Hindurchgehen zu ermöglichen.
  10. Rückenlehnenverschiebemechanismus nach Anspruch 9, wobei zwei Stiftbefestigungen, die sich nach unten erstrecken, auf einer Unterseite der Schiebehalterung befestigt sind, wobei sie an den zwei Seiten des Schiebers angeordnet sind und einen Durchgang ausbilden, um dem Positionierungsstift das Hindurchgehen und anschließend das feste Verbinden zu ermöglichen.
EP14000657.8A 2014-01-10 2014-02-25 Verschiebungsvorrichtung für eine Rückenlehne Not-in-force EP2893839B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410012199.XA CN103750668B (zh) 2014-01-10 2014-01-10 背靠平移机构

Publications (2)

Publication Number Publication Date
EP2893839A1 EP2893839A1 (de) 2015-07-15
EP2893839B1 true EP2893839B1 (de) 2016-04-13

Family

ID=50190147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14000657.8A Not-in-force EP2893839B1 (de) 2014-01-10 2014-02-25 Verschiebungsvorrichtung für eine Rückenlehne

Country Status (5)

Country Link
US (1) US9320359B2 (de)
EP (1) EP2893839B1 (de)
CN (1) CN103750668B (de)
BR (1) BR102014012804A2 (de)
PL (1) PL2893839T3 (de)

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US10405666B1 (en) 2017-12-22 2019-09-10 Scott A. Reus Reconfigurable chair system
US10973332B2 (en) * 2018-02-13 2021-04-13 InkBed, Inc. Chairs with adjustable back supports
DE102019118988A1 (de) * 2019-07-12 2021-01-14 Ferdinand Lusch Gmbh Polstermöbel mit verstellbarer Rückenlehne und Verfahren zu dessen Herstellung
CN216984254U (zh) * 2022-01-06 2022-07-19 宋同佩 一种模块组合沙发

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CN203776482U (zh) * 2014-01-10 2014-08-20 东莞市伟宏五金塑胶制品有限公司 背靠平移架

Also Published As

Publication number Publication date
US9320359B2 (en) 2016-04-26
CN103750668B (zh) 2016-02-10
US20150196122A1 (en) 2015-07-16
PL2893839T3 (pl) 2016-09-30
CN103750668A (zh) 2014-04-30
BR102014012804A2 (pt) 2016-03-15
EP2893839A1 (de) 2015-07-15

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